Flat, Shaped and Round Wire 


Gears, Knobs, Clock parts, Fitting, Screws, Compressor Rings, Structural applications, Electrodes, Welding and filler wire 


2000 series of alloys are a set of "hard alloys". The aluminum-copper alloys typically contain between 2 to 10% copper, with smaller additions of other elements. The copper provides substantial increases in strength and facilitates precipitation hardening. The introduction of copper to aluminum can also reduce ductility and corrosion resistance. The susceptibility to solidification cracking of aluminum­ copper alloys is increased; consequently, some of these alloys can be the most challenging aluminum alloys to weld. These alloys include some of the highest strength heat treatable aluminum alloys. 

Chemistry Typical


5.0-6.0 Cu, 0.20-06 Pb, 0.70 Fe max, 0.40 Si max, 0.30 Zn max, 
0.05 max other (each), 0.15 max other (total) 


3.5-4.5 Cu, 0.40-1.0 Mg, 0.20-0.80 Si, 0.7 Fe max, 0.4-0.80 Mn max, 0.25 Zn max, 0.15 Ti max, 0.10 Cr max, 0.05 max other (each), 
0.15 max other (total) 


3.8-4.9 Cu, 1.0-1.8 Mg, 0.30-0.9 Mn, 0.5 Si max, 0.50 Fe max, 
0.25 Zn max, 0.15 Ti max, 0.10 Cr max, 0.05 max other (each), 
0.15 max other (total) 


2.8-3.8 Cu, 1.2-1.8 Mg, 0.20-0.6 Mn, 0.15 Si max, 0.20 Fe max, 
0.25 Zn max, 0.10 Ti max, 0.05 max other (each), 0.15 max other (total)


5.8-6.8 Cu, 0.20-0.40 Mn, 0.10-0.25 Zr, 0.10-0.20 Ti, 0.05-.015 V, 0.02 Si max, 0.30 Fe max, 0.02 Mg max, 0.10 Zn max, 0.0008 Be max, 0.05 max other (each), 0.15 max other (total) 

*Contact Ulbrich Wire for request regarding the availability of other aluminum alloys.

Physical Properties 

Typical Density: 0.099 - 0.103 lbs/in3, 2.75 - 2.84 g/cm3

Electrical Conductivity: (% IACS at 68°F, annealed): 39-50% 

Thermal Conductivity: BTU-in/hr-ft2-°F at 68°F: 1050 - 1340 

Mean Coefficient of Thermal Expansion: µin/in-°F: 
68 - 572 °F: 13.6 - 14.1 

Modulus of Elasticity: KSI 
10.2 - 10.6 x 103 in tension 

Melting Temperature: 935 - 1190 °F (502 - 643 °C) 


Profile, Round, Flat, Square 

Mechanical Properties at Room Temperature 

Properties: Temper 0 

Ultimate Tensile Strength: 25 KSI min (172 MPa min) 
Yield Strength: 10 KSI min (168 MPa min) 
Elongation: 12% min 

Properties: Tempered 

These alloys can be cold worked to various tempers. 

*Actual physical and mechanical properties are alloy dependent. Contact Ulbrich Technical Service for alloy specific properties.

Additional Properties

Corrosion Resistance

Contact Ulbrich Wire for specific information. 

Wire Finishes

XC - Extra clean. Annealed or annealed and cold rolled. Contact Ulbrich Wire with special finish requests. 

Heat Treatment

These alloys are hardenable by cold working and by heat treatment. 


Contact Ulbrich Wire for specific information.    

Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels & Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the 'applications' noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document. 

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